Neurointervention.  2013 Sep;8(2):105-109. 10.5469/neuroint.2013.8.2.105.

Complex Coil Assisted Single Coil Embolization for Small Intracranial Aneurysm

  • 1Department of Radiology, Taitung Mackay Memorial Hospital, Taitung, Taiwan.
  • 2Department of Radiology, China Medical University Hospital, Taichung, Taiwan.
  • 3Department of Radiology, Chia-Yi Christian Hospital, Chia-Yi, Taiwan.
  • 4Department of Radiology, E-DA hospital, Kaohsiung, Taiwan.
  • 5Department of Radiology, Veteran General Hospital-Taichung, Taichung, Taiwan.
  • 6Department of Radiology, Show-Tran general hospital, Changhua, Taiwan.
  • 7Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
  • 8Department of Surgery, Taipei Mackay Memorial Hospital, Taipei, Taiwan.


The purpose of the technical note is to introduce the complex coil assisted coil embolization method in the treatment of intracranial small aneurysm, in order to enhance the safety of the procedure. The first microcatheter was navigated into the aneurysm sac and the ultrasoft coil was used as the embolization coil. If the embolizations coil could not stay within the aneurysm sac smoothly, such as coil herniation into parent artery during the delivery process. The second microcatheter would be navigated to the aneurysm level in the parent artery. Another complex coil was delivered within the parent artery via the second microcatheter to provide the neck bridge effect in order to enhance the stability of embolization coil. Besides, the protection coil will not disturb the parent artery flow. While the embolization coil was put into the aneurysm sac smoothly under the help of complex protective coil, the protective coil was then withdrawn gently. We use the most magnified view, dual-plane approach simultaneously to observe the stability of embolization coil. The embolization coil would be detached without any evidence of coil motion or vibration. The new method could provide the physiological protective method, without leaving any protective device such as stent within the parent artery.


Complex coil; Aneurysm, Ruptured/therapy; Embolization, Therapeutic/methods Intracranial aneurysm

MeSH Terms

Intracranial Aneurysm
Protective Devices
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